Is the weapon that is used by Gray. It's a longsword with two, sawtooth on the edge. It had an orange blade with a black reverse edge. It resembles the Black Blade, a weapon used by BRS.
Although not seen being used in Game, there's an artwork depicting Gray using a seemingly upgraded version of this weapon back when the other Clones were first mobilized. It had a set of serrated edges, much like the King Saw except the striking blade is the one serrated.